You should at least see a Dell splash screen or POST data on the monitor that would likely end with something like "No boot device". Do you see that? No beep would have nothing to do with whether an OS is installed or not. These beeps are BIOS generated. Some don't beep except on errors. If you get nothing on the screen, I'd suspect problems. You could try a bootable floppy or CD ROM to see what happens.
Hi, I bought a used Dell and shipped with no OS. I have Vista to install but when turning PC on I do not hear the beep that you hear when doing so on PC with an OS. Is this because no OS is installed or is it the other possible reasons, i.e. bad mother board, memory not seated, etc.? thanks